Type-writing machine.



W. Y. FORBES 6: W. H, RQTHWELL.

TYPE WRITING MACHINE. APPLICATION FILED 001231, 1908 Patented Aug. 23, I919.

6 SHEETS-SHEET 1.

W. Y. FORBES 15 W. H ROTHWBL J. TYPE WRITING MACHINE. APPLICATION FILED OUT- a1, 1908.

Patented Aug". 23, 1910.

8 SHEETS-SHEET 2.

02 (amid; Wwwm 2 W. Y. FORBES 6; W. H. ROTHWELL.

TYPE WRITING MACHINE. APPLICATION FILED OUT a1, 1908,

Patented Aug. 23, 1910.

6 SHEETS-SHEET 3.

W. Y. FORBES & W. H. ROTHWELL.

TYPE WRITING MACHINE.

APPLIOATION FILED 001. a1, 1908.

968,042. Patented Aug. 23, 1910.

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Q 2 WWW. $11M fifiw ZW W. Y. FORBES & WPH. ROTHWELL. I TYPE WRITING MACHINE.

APPLIOATION FILED 002i?v a1, 1908.

6 BH aETS- SHEBT 5.

I Lnai/i W. Y. FORBES & WIH. ROTHWELL.

TYPE WRITING MAGHINE.

APPLIOATIOH FILED 001 31, 190B.

Patented Aug. 23, 1910.

6 SHEETS-SHEET 6.

ORBES and. IVILLIAM I'IASTINGS Ro'rI-IwELL,

.partly in section, and Fig. 7 is a part plan,

hand in the act of returning the carriage. The release of the carriage 13, from the UNITED STATES PATENT OFF1CE.

WILLIAM Y. FORBES AND WILLIAM H. ROTI-IWELL, OF LIVERPOOL, ENGLAND.

- TYPE-WRITING MACHINE.

Specification of Letters Patent. Patented Aug. 23, 1910. Application filed October 31,

1908. Serial No. 460,555.

To all whom it may concern:

Be it known that we, \VILLIAM YUILE botlrsubjects of the. King of Great Britain and Ireland, residing at Lynwoothl Huyton, Liverpool, England, have invented a new and useful Improvement in Type-\Vriting Machines, of which the following is a specification.

This invention has reference to type-writing machines, and relates to mechanism for effecting and controlling the to and fro movements of the platen carriage; to mechanism for providing marginal spaces; and to mechanism for producing writings, numerals and the like, in a tabulated form.

'In the annexed drawings :Figure 1 is a plan and Fig. 2 is aside View; showing the general arrangement of a typewriting ma chine in which the presentimprovements are embodied. Fig. 3 is an underside plan of the machine. Fig. 4 is an end view of the, machine, with the platen carriage re'- moved. Fig. 5 is an underside plan of the platen carriage. Fig. 6 is a side view,

illustrating the tabulating mechanism upon a larger scale. Fig. 8 is a part plan of the front of the machine, illustrating means for affording side play to the rack bar and at-i tendant parts on said front portion.

According to this invention the principal motions of the typewriter are effected by or controlled from the main hand lever 24.: The toothed sector 23 rotates the spurwheel 20 and pinion 22, by which the platen carriage 13 is caused to travel to and fro upon its frame 46. Pivoted on this lever 24 are the carriage release lever 45 and the line, spacing lever 83, both (if these levers being conveniently positioned on the outward end of such hand lever 24, in order that they may be operated simultaneously by one pinion "29 of-tlic eseapement device is effectcd by tilting the rack 30 out of cngagement therewith, by the rising rod 41 and roller 42, a rodor wire 44 connecting the bell-lever 43 to which'the rising rod 41 is led, with the carriage release lever 45. Line spacing rotation is imparted to the platen roller by the lever 83 through the cord or wire 84, pull-rod 85, bar 86, and side levers 87, one of such side levers actuating the usual pawl and ratchet employed'for rotating. the platen roller. a

The outward end of the hand lever 24' traverses the are plate 113 at the front of the machine. rack 114, the teeth of which correspond in number with the teeth in the spacing rack 30 and consequently with-the spaces on the scale bar 107.

- The travel of the hand lever 24 is limited, in order to reduce marginal spaces on either side of the paper, by means of the stop markers 115 pivoted on the rod 116. Onemarker 115 is'provided for each group often (or othernumber). of teeth in theIO rack 114. The bottom and front of the markers 115 are formed with three flats, which are engaged by the flat-springs 117,

so that any marker may be turned into either of three positions, namely, a Vertical posi- In its normal position the endofthe release lever 118 engages the markers 11 5, andby depressing the key- 119 release is efieot'ed and the hand lever 2 1' niay'beshifted past 1 x such markers. 'A tabulating mechanism is also arranged upon'the end of such operating hand lever 24,. such tabulating mechanism operating in conjunction with the markers 115 above referred to. .Sueh tabulating mechanism-, kwhich "may be deta-chably mounted on the lever 2 1'comprises a series of horizontally sliding rods 120, which may be seven.in number, for numerals expressing millions. The rods 120 bear finger plates 121 on'which are marked units, tens,

hundreds, et cetera, and-such rods operate in conjunction with a-receiver bar 122, which bar is capable of a rocking motion and receives the end of either one of the rods 120 when it is pushed forward, the rocking mo such rod 120 upward so that it will engage with the markers 115 when the latter are turned into their third or downward position. The bar 122 is caused to roclf'by the I endof t he carriage release lever 45 engaging P On the plate 113 is a scale 60 tion of the bar 122 then tilting the endof operation, by pushing lnward'one of said rods l2O the end thereof passes on to the -'receivei' bar, and then slightly recedesunder theinfluence of itsspring 123. In this forward and: backward movement-a notch 124 on the rod 120 has: taken hold of the pawl 125, which.pawl then prevents the rod 120 from receding further. Then by'actuating the carriage release lever the receiverbar 122; is rocked andraises the end ofthe rod 120 "so that it will come incontact with a marker 115.' When the receiver bar 122 raises therod 120 the pawl 125 escapes'from the tooth 124, leaving therod 120 free to returnto its outward position y when the carriage release lever is relinquished.

The'arc front plate 113 carrying the rack 114 and markers 115, is arranged to possess a sidewise motion on the base of the machine, under the infiuencef of springs 126,

the object of this play being to allow the lever 2 1 to go past the point where it is requiredto stop, and then to recede to such point, thissmall play allowing the escape ment pawl 32 to pass its final tooth or pin- 31 in a movement. Thespring play also serves to obviate undue concussion of-the margin release lever 118 and tabulating rods 120 upon the markers 115., v

Having now describedour invention, what we claimas new and desire to secure by Letters Patent is:

1. 111a typewriting machine, the combination with ahand lever bywhich traversing movements of'th'e platen carriage may be effected,- of a lever for effecting line-spacing movements, 'alever for releasing the platen carriage from the escapement mechanism, and'a lever for engaglng and disengaging marginal stop pieces, all of said threelast mentioned levers being pivoted on the outward or hand end of the said hand lever, substantially as described.

" 2., In a typewriting machine, the combina- 45 tion with a hand lever by which the travers- .mg movements of the platen carriage may be efi'ected, of a tooth arc scale bar traversed by safid lever, pivoted stopmarkers capable of assuming either of thfielpositions on their pivotsand engaging in the teeth of said are vscale barin two of saidpositions to form imits of travel for said hand lever, a marginal. release lever pivoted on said hand lever and adapted to engage and disengage with said marker stops when the latter are placed in their central or horizontal position in the teeth of said are scale bar, substantially asdescribed.

3. In atypewriting machine, the combination with a hand lever by which traversing movements of the platen carriage may be effected, of a tabulating mechanism comprising a series of sliding key rods mounted on -said lever, a rocking bar possessing-notches adapted to receive the endsof said key rods when the latter are pushed inwardly, a lever for imparting motion to said rocking bar, apawl for retaining said key rods in engagement with the rocking bar until the latter has been raised,-an are scale bar trav ersed by said hand lever, and a series of -marker stop ]')ie(:es adapted to engage in the teeth of said "are scale liar and to engage with the raised ends of said key rods, substanti-ally as described.

W. Y. FORBES. \V. H. ROTHWEI 1L. dVitnesses i JAMES A. Counnomu, at. Bmxonano. 

